Jewell, Richard B. (1994). "RKO Film Grosses, 1929-1951: the C.J. Tevlin ledger". Historical Journal of Film, Radio and Television. 14 (1). ss. 37-49. doi:10.1080/01439689400260031.
Jewell, Richard B. (1994). "Appendix 1". Historical Journal of Film, Radio and Television. 14 (S1). ss. 1-11. doi:10.1080/01439689408604545.